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... was the show where Andy Kaufman (of "Taxi" fame) had his legendary meltdown (which
may or may not have been a hoax). See the very young Michael Richards (Kramer) near the
end of the skit.
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and I remember Michael Richards walking over, grabbing the cue cards, and slamming them on the table.

Later, when I saw it on a documentary type thing, I realized that one of the "roadie" types was the guy who did the obnoxious comic bit switching over between him and A.K. ...

There really were some funny bits on Fridays ...

"I'm lucky if I hum once a week ..." (and Mark Blankfield was excellent at the "We hum are hum the hum men hum who hum hum hum between hum words hum" - even to the point of humming between stammers ...)